Under rules, reporters covering the trial cannot use phones or laptops in the courtroom and must go outside to transmit news from inside.

Gates, considered a star witness against Manafort, struck a plea deal with prosecutors to cooperate in the case against his former business partner. The usually-bearded Gates appeared in court clean-shaven on Monday.

During opening arguments last week, the defense team made it clear it intended to blame Gates, who handled some day-to-day business operations for Manafort, for many of the alleged reporting deficiencies with which Manafort is charged.

Manafort, facing charges of bank and tax fraud related to his work in Ukraine, has pleaded not guilty to the charges.